Question

Sample Problem 5. A train travels at a speed of 60 km/h for 0.52 h, at 30 km/h for the next 0.24 h and
then at 70 km/h for the next 0.71 h. What is the average speed of the train ?​

Answer 1

1. Answer:avg speed=total distance/total time

Explanation:

v=distance/time

distance=speed ✖ time

avg speed =60 ✖ 0.52+30 ✖ 0.24+70 ✖ 0.7/0.52+0.24+0.71

avg speed=31.2+7.2+49.7/1.47